Hypothyroid during pregnancy

So I had my first at 25 without any issues then went on birth control, now I'm 30 and we started trying back in August, I had irregular periods and then I became pregnant in November.. But I miscarried at 6 weeks. I just found out I have a low acting thyroid which can cause miscarriages. So I'll have to start synthroid. Anyone take that well pregnant and have any issues? I'm scared to miscarry again and I know ur thyroid levels need checked more often and need adjusted but its still very scary and I wonder if it's worth trying again.